Uni-ball Signo TSI 0.7mm Red

Uni-ball say : This pen writes and erases. You can use the eraser on the top of the pen or the one on the cap to correct your mistakes, because after all, no one's perfect! The Signo TSI is the latest in erasable ink technology. Heat sensitive ink turns completely clear when you use the eraser on the end of the pen or the eraser on the cap, allowing you to correct mistakes. This makes the TSI perfect for card writing, filling in forms, homework and even making notes on text books.